Features this teeth whitening kit comes with a mouth tray that fits all mouths and requires no special fitment, or molding. the mouth tray is made out of high-quality bpa-free silicone that is completely non-toxic and safe to use. use the teeth whitener once a day for about 30-minutescycle and you see results within the first few treatments, and in many cases, immediately! you'll be able to finally remove stains that came from dirking dark drinks, smoking, and more! the whitening kit includes a led accelerator light with five bulbs for more power, and a built-in timer to let you know when it is safe to remove the mouth tray, and when your cycle is complete. you can clean the mouthpiece directly in water. the tray will not be broken easily but please make sure that the tray is completely dry before inserting it into the machine.specifications color black, white material abs, silicone size 18.5 8.8 6.5 cm weight 350g treatment time 30 mins battery information 2 cr2450 button battery includedpackage includes 1 x teeth whitening light 3 x3ml teeth whitening syringe 1 x silicone mouth tray 1 x user manual 1 x shade guide